When the U.S. Army’s chief of staff, Gen. Ray Odierno, identified the service’s top three acquisition priorities in January, two were new ground vehicles. At the time, it was not much of a surprise—even at the end of a decade in which the service fell in love with the Stryker vehicle and spent almost $50 billion to build more than 25,000 Mine-Resistant Ambush-Protected (MRAP) variants ...